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Contest 2050 and Codeforces Round #718 (Div. 1 + Div. 2)
19:12:41
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Difficulty:
—
implementation
combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Custom test
Problems
#
Name
158A
Next Round
*special problem
,
implementation
800
x108354
282A
Bit++
implementation
800
x96346
112A
Petya and Strings
implementation
,
strings
800
x94215
263A
Beautiful Matrix
implementation
800
x93719
339A
Helpful Maths
greedy
,
implementation
,
sortings
,
strings
800
x88128
281A
Word Capitalization
implementation
,
strings
800
x85039
266A
Stones on the Table
implementation
800
x80250
236A
Boy or Girl
brute force
,
implementation
,
strings
800
x78784
546A
Soldier and Bananas
brute force
,
implementation
,
math
800
x70179
791A
Bear and Big Brother
implementation
800
x69477
977A
Wrong Subtraction
implementation
800
x66090
116A
Tram
implementation
800
x63913
59A
Word
implementation
,
strings
800
x62751
266B
Queue at the School
constructive algorithms
,
graph matchings
,
implementation
,
shortest paths
800
x61092
110A
Nearly Lucky Number
implementation
800
x59825
41A
Translation
implementation
,
strings
800
x58418
734A
Anton and Danik
implementation
,
strings
800
x57996
677A
Vanya and Fence
implementation
800
x54226
467A
George and Accommodation
implementation
800
x53930
136A
Presents
implementation
800
x52615
344A
Magnets
implementation
800
x50522
1030A
In Search of an Easy Problem
implementation
800
x49959
705A
Hulk
implementation
800
x48569
486A
Calculating Function
implementation
,
math
800
x48143
61A
Ultra-Fast Mathematician
implementation
800
x46959
200B
Drinks
implementation
,
math
800
x46715
469A
I Wanna Be the Guy
greedy
,
implementation
800
x44063
148A
Insomnia cure
constructive algorithms
,
implementation
,
math
800
x43664
228A
Is your horseshoe on the other hoof?
implementation
800
x43209
144A
Arrival of the General
implementation
800
x42319
443A
Anton and Letters
constructive algorithms
,
implementation
800
x41120
520A
Pangram
implementation
,
strings
800
x39744
785A
Anton and Polyhedrons
implementation
,
strings
800
x39124
141A
Amusing Joke
implementation
,
sortings
,
strings
800
x37934
510A
Fox And Snake
implementation
800
x34852
581A
Vasya the Hipster
implementation
,
math
800
x33415
750A
New Year and Hurry
binary search
,
brute force
,
implementation
,
math
800
x33290
1352A
Sum of Round Numbers
implementation
,
math
800
x32938
732A
Buy a Shovel
brute force
,
constructive algorithms
,
implementation
,
math
800
x32250
427A
Police Recruits
implementation
800
x31726
1367A
Short Substrings
implementation
,
strings
800
x31511
723A
The New Year: Meeting Friends
implementation
,
math
,
sortings
800
x30073
432A
Choosing Teams
greedy
,
implementation
,
sortings
800
x29781
758A
Holiday Of Equality
implementation
,
math
800
x29543
490A
Team Olympiad
greedy
,
implementation
,
sortings
800
x28573
703A
Mishka and Game
implementation
800
x28163
749A
Bachgold Problem
greedy
,
implementation
,
math
,
number theory
800
x27033
1370A
Maximum GCD
greedy
,
implementation
,
math
,
number theory
800
x26812
1433A
Boring Apartments
implementation
,
math
800
x26228
509A
Maximum in Table
brute force
,
implementation
800
x25522
707A
Brain's Photos
implementation
800
x25428
431A
Black Square
implementation
800
x25407
1311A
Add Odd or Subtract Even
greedy
,
implementation
,
math
800
x25298
381A
Sereja and Dima
greedy
,
implementation
,
two pointers
800
x24748
1097A
Gennady and a Card Game
brute force
,
implementation
800
x24660
492A
Vanya and Cubes
implementation
800
x24613
151A
Soft Drinking
implementation
,
math
800
x24528
935A
Fafa and his Company
brute force
,
implementation
800
x24375
1372A
Omkar and Completion
constructive algorithms
,
implementation
800
x23835
1325B
CopyCopyCopyCopyCopy
greedy
,
implementation
800
x23673
1186A
Vus the Cossack and a Contest
implementation
800
x23433
731A
Night at the Museum
implementation
,
strings
800
x23274
1426A
Floor Number
implementation
,
math
800
x23265
1462A
Favorite Sequence
implementation
,
two pointers
800
x23057
540A
Combination Lock
implementation
800
x22855
1473A
Replacing Elements
greedy
,
implementation
,
math
,
sortings
800
x22585
711A
Bus to Udayland
brute force
,
implementation
800
x22403
1368A
C+=
brute force
,
greedy
,
implementation
,
math
800
x22242
702A
Maximum Increase
dp
,
greedy
,
implementation
800
x21647
1512A
Spy Detected!
brute force
,
implementation
800
x21248
1433B
Yet Another Bookshelf
greedy
,
implementation
800
x21190
119A
Epic Game
implementation
800
x21101
32B
Borze
expression parsing
,
implementation
800
x21028
734B
Anton and Digits
brute force
,
greedy
,
implementation
,
math
800
x20654
599A
Patrick and Shopping
implementation
800
x20601
1454B
Unique Bid Auction
implementation
800
x20192
822A
I'm bored with life
implementation
,
math
,
number theory
800
x20120
1220A
Cards
implementation
,
sortings
,
strings
800
x19977
233A
Perfect Permutation
implementation
,
math
800
x19929
686A
Free Ice Cream
constructive algorithms
,
implementation
800
x19588
1303A
Erasing Zeroes
implementation
,
strings
800
x19288
1391B
Fix You
brute force
,
greedy
,
implementation
800
x19118
1462B
Last Year's Substring
dp
,
implementation
,
strings
800
x18849
1487A
Arena
implementation
,
sortings
800
x18757
448A
Rewards
implementation
800
x18727
1095A
Repeating Cipher
implementation
800
x18257
1183A
Nearest Interesting Number
implementation
800
x18207
1003A
Polycarp's Pockets
implementation
800
x18083
1207A
There Are Two Types Of Burgers
brute force
,
greedy
,
implementation
,
math
800
x17639
1180A
Alex and a Rhombus
dp
,
implementation
,
math
800
x17448
1453A
Cancel the Trains
implementation
800
x17304
330A
Cakeminator
brute force
,
implementation
800
x17303
1300A
Non-zero
implementation
,
math
800
x17256
265A
Colorful Stones (Simplified Edition)
implementation
800
x17234
1228A
Distinct Digits
brute force
,
implementation
800
x17198
1041A
Heist
greedy
,
implementation
,
sortings
800
x17178
1108A
Two distinct points
implementation
800
x17169
716A
Crazy Computer
implementation
800
x17129
255A
Greg's Workout
implementation
800
x17096
1230A
Dawid and Bags of Candies
brute force
,
implementation
800
x16932
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